Ariat Men's Rebar Valiant Ripstop Insulated Vest Size XL. This jacket is constructed from a 9-ounce durable DuraStretch™ canvas softshell (95% nylon, 5% spandex), it is water-repellent and wind-resistant, providing lightweight warmth for cold conditions with 200g of Cool Climate Insulation™. It features zippered chest and hand pockets, plus an internal chest pocket for secure storage.